Chromeleon License File Info

If you have no backup and the drive is dead, you need a Rehost.

Knowing the default file paths is non-negotiable for troubleshooting. The location depends on your version and operating system.

For Chromeleon 7.x (Server-based installation): chromeleon license file

For the License Manager Tool:

Important: The ProgramData folder is hidden by default in Windows. You must enable "View hidden items" in File Explorer to navigate there. If you have no backup and the drive

Thermo Fisher is slowly moving toward subscription-based licenses (SaaS). In this model, the "license file" is actually a short-lived JSON web token that phones home to Thermo every 30 days.

While this reduces the risk of losing a file (it auto-downloads), it introduces the risk of internet outages. If you are on a subscription license, keep a printed copy of your activation code in a safe. For the License Manager Tool:

The license file is stored in a protected system folder. Even if you installed Chromeleon on the D: drive, the license usually remains on the C: drive.

Path:

C:\ProgramData\Thermo\Chromeleon\7\Data\

Note: ProgramData is a hidden folder. Type it manually into File Explorer.

File names to look for: